Duomo GS920 Manual

GS920
Seismic activity Natural Gas & L.P.G. Detector
GS920 Seismic Activity Natural Gas / Propane Sensor
Natural
Gas
LPG
Seismic
activity
IP42
FEATURES
■
Seismic Activity
■
Natural Gas or Propane detection sensor
■
230V AC 50Hz Power Supply
■
12V DC Battery backup option
■
Catalytic Sensor Technology
■
-10°C to +40°C Operating temperture
■
IP42 Protective Rating
■
CE Certified and approved to EN50194 & EN61779
■
6 Year sensor lifespan
(in clean air and within operating temperature)
■
2 Year Guarantee - 3 Year by Registering at duomo.co.uk
APPLICATION
The GS920 is a stand alone gas detector for detcting methane
or LPG sensor (specify at order stage) with an integrated seismic
detector that will shut off off a gas valve in the event of seismic
activity making it an ideal sensor in areas prone to earthquakes.
With a built-in relay the GS920 can be used to shut off a gas valve
in the event of a leak, or operate remote sirens and beacons to alert
those nearby of a potential hazard.
OPERATION
As gas concentrations exceed 10%LEL the relay on the unit will
actuate into an alarm state. Using a built-in 3-axis accelerometer,
the GS920 will shut off a gas valve and halt the gas supply when
seismic activity reaches 6 on the Modified Mercalli scale (or 60
-70cm/s2).
Stopping the gas supply in a building at this time is a valuable, and
potentially life-saving, exercise. Ruptured pipework due to buildings
shifting can cause undetected leaks and an increased risk of
explosion.
A further relay on the unit is pre-set to actuate at 10% LEL of either
methane or LPG. This relay can break the electrical connection to a
gas valve, or make a connection to an external waring device such
as an audible alarm or flashing beacon.
t: 01905 797989
e: sales@duomo.co.uk | w: www.duomo.co.uk
SPECIFICATION
Power
Power Supply
230V AC 50Hz +/- 10%
Secondary Battery
12V DC - 1.2Ah +/- 10%
Current Consumption
2W @ 230V
Technical Specification
Earthquake Proof Sensor
6 degree of Mecalli scale
th
Gas(es) Detected
L.P.G or Natural Gas
Sensor Technology Catalytic
Dimensions
Width 115mm | Height 150mm | Depth 45mm
LED indicator
Green: Power ON
Yellow: Fault
Red: Alarm
Mounting Wall Mounted or Embedded box
Alarm Threshold
10% of LEL
Working Temperature
-10°C to 40°C
Functioning Humidity 0-90% Relative Humidity
Body Material
ABS Self Extinguishing
Protective Rating
IP42
Compatibility
Calibration Gas Compatibility
Duomo Nat Gas / L.P.G Test Gases
Approvals, Certifications and Guarantee
Approvals
CE Certification: No.96125
Guarantee 2 Year as Standard
3 Year by Registering at www.duomo.co.uk
BATTERY CONNECTION
It is possible to connect this unit to a 12V DC battery to perform two
functions:
Firstly, It can be used to power the unit itself for up to one hour in the
events of mains failure.
Secondly, the battery can power a remote 12V DC manual reset
solenoid valve or siren, over 300mA.
1